Category: piperidines

Gross, Kathleen M. Bertini; Beak, Peter published the artcile< Complex-Induced Proximity Effects: The Effect of Varying Directing-Group Orientation on Carbamate-Directed Lithiation Reactions>, SDS of cas: 149518-50-3, the main research area is proximity effect complex induced; carbamate directed lithiation.

A series of selected bicyclic carbamates in which the range of accessible angles and distances between the carbonyl group and the proton removed in an α-lithiation reaction are structurally defined have been investigated. Oxazolidinones I (n = 1, 2; R = i-Pr, t-Bu) undergo stereoselective lithiation-substitution reactions to provide cis-II as the major diastereomers. Two series of competition experiments show that the conformationally restricted carbamates undergo lithiation via complexes more efficiently than Boc amines (e.g., N-Boc-pyrrolidine, N-Boc-piperidine). These results along with semiempirical calculations suggest that a small dihedral angle and a calculated distance of 2.78 Å between the carbamate carbonyl oxygen and the proton to be removed are favorable for a carbamate-directed lithiation. A series of tin-lithium exchange experiments indicate that the configurational stability of a carbamate-stabilized organolithium species may be enhanced by restrictive geometry.

Journal of the American Chemical Societypublished new progress about Chelation (and configurational stability of carbanion intermediate). 149518-50-3 belongs to class piperidines, and the molecular formula is C12H21NO4, SDS of cas: 149518-50-3.

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Wagener, Tobias; Lueckemeier, Lukas; Daniliuc, Constantin G.; Glorius, Frank published the artcile< Interrupted pyridine hydrogenation: Asymmetric synthesis of δ-lactams>, SDS of cas: 25504-47-6, the main research area is delta lactam preparation oxazolidinone substituted pyridine interrupted hydrogenation; asymmetric catalysis; heterogeneous catalysis; hydrogenation; lactams; nitrogen heterocycles.

Metal-catalyzed hydrogenation is an effective method to transform readily available arenes into saturated motifs, however, current hydrogenation strategies are limited to the formation of C-H and N-H bonds. The stepwise addition of hydrogen yields reactive unsaturated intermediates that are rapidly reduced. In contrast, the interruption of complete hydrogenation by further functionalization of unsaturated intermediates offers great potential for increasing chem. complexity in a single reaction step. Overcoming the tenet of full reduction in arene hydrogenation has been seldom demonstrated. In this work the authors report the synthesis of sought-after, enantioenriched δ-lactams from oxazolidinone-substituted pyridines and water by an interrupted hydrogenation mechanism.

Angewandte Chemie, International Editionpublished new progress about Hydrogenation. 25504-47-6 belongs to class piperidines, and the molecular formula is C7H11NO3, SDS of cas: 25504-47-6.

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Nakajima, Noriyuki; Ubukata, Makoto published the artcile< Preparation of nitriles from primary amides under Swern oxidation conditions>, Synthetic Route of 91419-53-3, the main research area is Swern oxidation carboxamide; nitrile preparation.

In order to establish a mild conversion method of primary amides to nitriles, various types of carboxamides were treated under Swern oxidation conditions, (COCl)2-DMSO and Et3N, as a dehydrating agent to obtain desired nitriles in 75-96% yields.

Tetrahedron Letterspublished new progress about Amides Role: RCT (Reactant), RACT (Reactant or Reagent). 91419-53-3 belongs to class piperidines, and the molecular formula is C11H18N2O2, Synthetic Route of 91419-53-3.

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Liu, Richard Y.; Bae, Minwoo; Buchwald, Stephen L. published the artcile< Mechanistic Insight Facilitates Discovery of a Mild and Efficient Copper-Catalyzed Dehydration of Primary Amides to Nitriles Using Hydrosilanes>, Name: tert-Butyl 3-cyanopiperidine-1-carboxylate, the main research area is copper catalyst dehydration primary amide hydrosilane; nitrile preparation.

Metal-catalyzed silylative dehydration of primary amides is an economical approach to the synthesis of nitriles. A copper-hydride(CuH)-catalyzed process is reported that avoids a typically challenging 1,2-siloxane elimination step, thereby dramatically increasing the rate of the overall transformation relative to alternative metal-catalyzed systems. This new reaction proceeds at ambient temperature, tolerates a variety of metal-, acid-, or base-sensitive functional groups and can be performed using a simple ligand, inexpensive siloxanes and low catalyst loading.

Journal of the American Chemical Societypublished new progress about Amides Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 91419-53-3 belongs to class piperidines, and the molecular formula is C11H18N2O2, Name: tert-Butyl 3-cyanopiperidine-1-carboxylate.

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Piperidine the name comes from the genus name Piper, which is the Latin word for pepper. 84358-13-4, formula is C11H19NO4, Name is 1-(tert-Butoxycarbonyl)piperidine-4-carboxylic acid. Although piperidine is a common organic compound, it is best known as a representative structure element within many pharmaceuticals and alkaloids, such as natural-occurring solenopsins. Category: piperidines.

Zhang, Ziyi;Chen, Zhiguo;Zhang, Shengyu;Shao, Xiao;Zhou, Zhiwen research published 《 Antibacterial activity of the structurally novel ocotillol-type lactone and its analogues》, the research content is summarized as follows. A novel series of ocotillol-type lactone derivatives were designed and synthesized in order to study their antibacterial activity and structure-activity relationships. Among which, compounds 4j and 4 m were found to be the most active with min. inhibitory concentrations (MICs) of 1-4 μg/mL against Gram-pos. bacteria and showed low cytotoxicity against MCF-7, HEK-293 and HK-2 cells at their MICs. The antibacterial effect of compound 4 m was characterized further by SEM, cytoplasmic β-galactosidase leakage assay and UV-visible anal. The results showed that 4 m may exert its antibacterial effect by damaging bacterial cell membranes and disrupting the function of DNA, both of which could lead to rapid cell death.

84358-13-4, N-BOC-piperidine-4-carboxylic acid, also known asN-Boc-isonipecotic acid , is a useful research compound. Its molecular formula is C11H19NO4 and its molecular weight is 229,28 g/mole. The purity is usually 95%.

N-Boc-isonipecotic acid is a potent antitumor agent that has been clinically shown to be effective against leukemia and lymphoma. It has potent antibacterial activity against Gram-positive bacteria such as Staphylococcus aureus and Streptococcus pyogenes. N-Boc-isonipecotic acid binds to the gyrase enzyme, which is used by these bacteria to maintain the integrity of their DNA, inhibiting protein synthesis and cell division. This drug also has anti-inflammatory properties. N-Boc-isonipecotic acid inhibits prostaglandin synthesis in cells, which may be due to its ability to inhibit the production of tumor necrosis factor α (TNFα) in macrophages., Category: piperidines

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Piperidine structural motif is present in numerous natural alkaloids. These include piperine, which gives black pepper its spicy taste. This gave the compound its name. 84358-13-4, formula is C11H19NO4, Name is 1-(tert-Butoxycarbonyl)piperidine-4-carboxylic acid. Other examples are the fire ant toxin solenopsin, the nicotine analog anabasine of tree tobacco (Nicotiana glauca), lobeline of Indian tobacco. Application of C11H19NO4.

Zhao, Haoqiang;Xu, Xin;Yu, Haiyang;Li, Bohan;Xu, Xingyu;Li, Huanrong;Xu, Lijin;Fan, Qinghua;Walsh, Patrick J. research published 《 Rh(I)-Catalyzed C6-Selective Decarbonylative Alkylation of 2-Pyridones with Alkyl Carboxylic Acids and Anhydrides》, the research content is summarized as follows. A Rh-catalyzed chelation-assisted C6-selective C-H activation/alkylation of 2-pyridones e.g., 1-(pyridin-2-yl)-1,2-dihydropyridin-2-one with readily available anhydrides RC(O)OC(O)R (R = Me, Et, 2-methylpropyl, etc.) or alkyl carboxylic acids R¹C(O)OH (R¹ = nonyl, cyanoethyl, cyclohexyl, etc.) is introduced. The reaction proceeds via substrate decarbonylation. This approach merges C-H functionalization with readily available anhydrides, allowing for the efficient synthesis of various C6-alkylated 2-pyridones e.g., 6-methyl-2H-[1,2′-bipyridin]-2-one with good functional group tolerance.

84358-13-4, N-BOC-piperidine-4-carboxylic acid, also known asN-Boc-isonipecotic acid , is a useful research compound. Its molecular formula is C11H19NO4 and its molecular weight is 229,28 g/mole. The purity is usually 95%.

N-Boc-isonipecotic acid is a potent antitumor agent that has been clinically shown to be effective against leukemia and lymphoma. It has potent antibacterial activity against Gram-positive bacteria such as Staphylococcus aureus and Streptococcus pyogenes. N-Boc-isonipecotic acid binds to the gyrase enzyme, which is used by these bacteria to maintain the integrity of their DNA, inhibiting protein synthesis and cell division. This drug also has anti-inflammatory properties. N-Boc-isonipecotic acid inhibits prostaglandin synthesis in cells, which may be due to its ability to inhibit the production of tumor necrosis factor α (TNFα) in macrophages., Application of C11H19NO4

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Piperidine was first reported in 1850 by the Scottish chemist Thomas Anderson and again, independently, in 1852 by the French chemist 5382-16-1, formula is C5H11NO, Name is 4-Piperidinol. Auguste Cahours, who named it. Both of them obtained piperidine by reacting piperine with nitric acid. Synthetic Route of 5382-16-1.

Zhao, Tianming;Yang, Yu;Yang, Jing;Cui, Youbao;Cao, Zhi;Zuo, Daiying;Zhai, Xin research published 《 Harmine-inspired design and synthesis of benzo[d]imidazo[2,1-b]thiazole derivatives bearing 1,3,4-oxadiazole moiety as potential tumor suppressors》, the research content is summarized as follows. In view of the essential role of Twist1 in the tumorigenesis of NSCLC, developing antitumor small mols. that can suppress the expression of Twist1 is of far-reaching significance for the treatment of NSCLC. A series of novel benzo[d]imidazo[2,1-b]thiazole derivatives possessing 1,3,4-oxadiazole moiety I [Q = (CH₂)_n, n = 1, 2; R = 1-piperidyl, (4-methyl-1-piperidyl), (4-hydroxy-1-piperidyl), etc] was designed based on the structure of the first-in-class Twist1 inhibitor harmine. Among the synthetic twenty-two compounds, I the compound containing 2-(piperidine-1-yl) Et exhibited remarkable anti-proliferative activity with IC₅₀ value of 2.03μM and 9.80μM against A549 and H2228 cell lines superior to harmine (IC₅₀ = 17.12μM against A549, IC₅₀ = 31.06μM against H2228). Meanwhile, western blot assay showed that the optimal compound significantly down-regulated Twist1 protein expression in a dose-dependent manner and reduced Twist1 level better than harmine. Collectively, the promising compound was identified a potential antineoplastic lead with the ability of down-regulating Twist1 level.

5382-16-1, 4-Hydroxypiperidine is a molecule with a carbonyl group. It is the most active and selective CCR5 receptor antagonist that has been studied to date. 4-Hydroxypiperidine inhibits HIV infection by preventing the binding of HIV to its receptor on the surface of white blood cells, thereby preventing it from entering these cells. 4-Hydroxypiperidine also acts as an anti-inflammatory agent in chronic bronchitis patients, due to its ability to inhibit prostaglandin synthesis. The chemical ionization mass spectra of this molecule show peaks for methyl ethyl, malic acid, and hydroxyl groups. These properties make 4-hydroxypiperidine a useful candidate for drug development against inflammatory diseases and several cancers.
The molecular structure, vibrational spectra, NBO and UV-spectral analysis of 4-Hydroxypiperidine have been studied. The compounds with a substituted 4-piperidinol core have been found to be potent antagonists of the human H receptor., Synthetic Route of 5382-16-1

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Piperidine was first reported in 1850 by the Scottish chemist Thomas Anderson and again, independently, in 1852 by the French chemist 84358-13-4, formula is C11H19NO4, Name is 1-(tert-Butoxycarbonyl)piperidine-4-carboxylic acid. Auguste Cahours, who named it. Both of them obtained piperidine by reacting piperine with nitric acid. Quality Control of 84358-13-4.

Zhao, Yanmei;Xu, Lei;Zhang, Jiankang;Zhang, Mengmeng;Lu, Jingyi;He, Ruoyu;Xi, Jianjun;Zhuang, Rangxiao;Li, Jia;Zhou, Yubo research published 《 Optimization of piperidine constructed peptidyl derivatives as proteasome inhibitors》, the research content is summarized as follows. A series of non-covalent piperidine-containing peptidyl derivatives with various substituents at side chains of different residues were designed, synthesized and evaluated as proteasome inhibitors. After proteasome inhibitory evaluations of all the synthesized target compounds, selected ones were tested for their anti-proliferation activities against three multiple myeloma (MM) cell lines. Eight analogs displayed more potent activities than carfilzomib, and the most promising compound 24 (I) showed IC₅₀ values of 0.8 ± 0.2 nM against 20S proteasome and 8.42 ± 0.74 nM, 7.14 ± 0.52 nM, 14.20 ± 1.08 nM for RPMI 8226, NCI-H929 and MM.1S cell lines, resp. Addnl., mechanisms of anti-cancer activity of representative compound 24 were further investigated. Apoptosis of RPMI-8226 cells were achieved through accumulating polyubiquitin and inducing the cleavage of caspase and PARP. Besides, half-life in rat plasma of compound 24 was prolonged after optimization, which would be helpful for increasing in vivo activities of this series of derivatives All the studies confirmed that piperidine-containing non-covalent proteasome inhibitors can be potential leads for anti-MM drug development.

84358-13-4, N-BOC-piperidine-4-carboxylic acid, also known asN-Boc-isonipecotic acid , is a useful research compound. Its molecular formula is C11H19NO4 and its molecular weight is 229,28 g/mole. The purity is usually 95%.

N-Boc-isonipecotic acid is a potent antitumor agent that has been clinically shown to be effective against leukemia and lymphoma. It has potent antibacterial activity against Gram-positive bacteria such as Staphylococcus aureus and Streptococcus pyogenes. N-Boc-isonipecotic acid binds to the gyrase enzyme, which is used by these bacteria to maintain the integrity of their DNA, inhibiting protein synthesis and cell division. This drug also has anti-inflammatory properties. N-Boc-isonipecotic acid inhibits prostaglandin synthesis in cells, which may be due to its ability to inhibit the production of tumor necrosis factor α (TNFα) in macrophages., Quality Control of 84358-13-4

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Piperidine is an organic compound with the molecular formula (CH2)5NH. This heterocyclic amine consists of a six-membered ring containing five methylene bridges (–CH2–) and one amine bridge (–NH–). 2403-88-5, formula is C9H19NO, Name is 2,2,6,6-Tetramethyl-4-piperidinol. It is a colorless liquid with an odor described as objectionable, and typical of amines. Recommanded Product: 2,2,6,6-Tetramethyl-4-piperidinol.

Zheng, Weisheng;Sun, Yue;Gu, Yingpeng research published 《 Catalysis and adsorption of Zr-doped Fe₃O₄ nanoparticles provide a new strategy for diazinon removal and phosphorus recovery from aqueous solution》, the research content is summarized as follows. As potential persistent and toxic organic contaminants, organophosphorus pesticides (OPPs) are frequently detected in various waters. However, few studies are available on removing OPPs in aqueous solution through heterogeneous catalytic activated peroxymonosulfate (PMS). Herein, Zr-doped Fe₃O₄ magnetic nanoparticles were prepared via a facile solvothermal method and employed to activate PMS for degrading diazinon. A series of characterization and performance tests revealed that Zr_(0.3)Fe₃O₄ composite played a dual role as both adsorbent and heterogeneous catalyst for removal of diazinon. Attractively, the introduction of Zr into magnetite endowed the nanoparticles with prominent adsorption capacity for released phosphate during the oxidation reaction. Combined with ESR (EPR) spectra and quenching studies, Zr_(0.3)Fe₃O₄ effectively catalyzed PMS to produce four kinds of reactive oxygen species (ROS), and ¹O₂ and O^–₂ were dominantly responsible for diazinon degradation Furthermore, the possible degradation pathways of diazinon in Zr_(0.3)Fe₃O₄/PMS system were discussed based on liquid chromatog. mass spectrometry (LC-MS) anal. In conclusion, the Zr_(0.3)Fe₃O₄ nanoparticles can not only remove diazinon by catalytic oxidation but also immobilize degraded phosphorus, hence, this work offers a novel strategy for developing versatile composites.

2403-88-5, 2,2,6,6-Tetramethyl-4-piperidinol(TEMPO) is a useful research compound. Its molecular formula is C9H19NO and its molecular weight is 157.25 g/mol. The purity is usually 95%.
TEMPO is an intermediate used in the preparation of Piperidinyloxy free radical derivatives.
TEMPO is an organic compound that acts as a radical scavenger. It is stable in the presence of water and air and can be used for the inhibition of bacterial growth. TEMPO reacts with reactive intermediates to form non-reactive substances and terminate chain reactions. This process is optimal at temperatures between 0°C and 40°C and pH values between 3.5 and 7.5. TEMPO has been shown to inhibit the growth of bacteria by reacting with reactive molecules such as amines, chlorides, or low energy radicals in aqueous solution. TEMPO also has genotoxic activity that inhibits DNA synthesis in bacterial cells through oxidation of guanine residues on DNA molecules., Recommanded Product: 2,2,6,6-Tetramethyl-4-piperidinol

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Piperidine structural motif is present in numerous natural alkaloids. These include piperine, which gives black pepper its spicy taste. This gave the compound its name. 2403-88-5, formula is C9H19NO, Name is 2,2,6,6-Tetramethyl-4-piperidinol. Other examples are the fire ant toxin solenopsin, the nicotine analog anabasine of tree tobacco (Nicotiana glauca), lobeline of Indian tobacco. COA of Formula: C9H19NO.

Zheng, Wentian;Liu, Yanbiao;Liu, Wen;Ji, Haodong;Li, Fang;Shen, Chensi;Fang, Xiaofeng;Li, Xiang;Duan, Xiaoguang research published 《 A novel electrocatalytic filtration system with carbon nanotube supported nanoscale zerovalent copper toward ultrafast oxidation of organic pollutants》, the research content is summarized as follows. In this study, we designed an integrated electrochem. filtration system for catalytic activation of peroxymonosulfate (PMS) and degradation of aqueous microcontaminants. Composites of carbon nanotube (CNT) and nanoscale zero valence copper (nZVC) were developed to serve as high-performance catalysts, electrode and filtration media simultaneously. We observed both radical and nonradical reaction pathways, which collectively contributed to the degradation of model pollutants. Congo red was completely removed via a single-pass through the nZVC-CNT filter (τ <2 s) at neutral pH. The rapid kinetics of Congo red degradation were maintained across a wide pH range (from 3.0-7.0), in complicated matrixes (e.g., tap water and lake water), and for the degradation of a wide array of persistent organic contaminants. The superior activity of nZVC-CNT stems from the boosted redox cycles of Cu2+/Cu+ in the presence of an external elec. field. The flow-through design remarkably outperformed the conventional batch system due to the convection-enhanced mass transport. Mechanism studies suggested that the carbonyl group and electrophilic oxygen of CNT served as electron donor and electron acceptor, resp., to activate PMS to generate •OH and 1O2via one-electron transport. The electron-deficient Cu atoms are prone to react with PMS via surface hydroxyl group to produce reactive intermediates (Cu2+-O-O-SO-3), and then 1O2 will be generated by breaking the coordination bond of the metastable intermediate. The study will provide a green strategy for the remediation of organic pollution by a highly efficient and integrated system based on catalytic oxidation, electrochem., and nano-filtration techniques.

COA of Formula: C9H19NO, 2,2,6,6-Tetramethyl-4-piperidinol(TEMPO) is a useful research compound. Its molecular formula is C9H19NO and its molecular weight is 157.25 g/mol. The purity is usually 95%.
TEMPO is an intermediate used in the preparation of Piperidinyloxy free radical derivatives.
TEMPO is an organic compound that acts as a radical scavenger. It is stable in the presence of water and air and can be used for the inhibition of bacterial growth. TEMPO reacts with reactive intermediates to form non-reactive substances and terminate chain reactions. This process is optimal at temperatures between 0°C and 40°C and pH values between 3.5 and 7.5. TEMPO has been shown to inhibit the growth of bacteria by reacting with reactive molecules such as amines, chlorides, or low energy radicals in aqueous solution. TEMPO also has genotoxic activity that inhibits DNA synthesis in bacterial cells through oxidation of guanine residues on DNA molecules., 2403-88-5.

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem